I guess the only way to be sure is vent it lol!!!....The only thing I can see where it might be a female is body shape... Cich wit if that is a female that has a lot of color....See how the color is uniform all the way to the shoulder area? Females are more blotchy and space out. Also the blue face mask is a sure way to tell. The female the lower jaw are is more of a soild color less spangles.
Also females in breedng time tend to get a black bar in the gill checks.
Also females in breedng time tend to get a black bar in the gill checks.